Materials Physics at LTU: new prospectives for collaboraion - - PowerPoint PPT Presentation
Materials Physics at LTU: new prospectives for collaboraion Alexander Soldatov Materials Physics group Division of Physics,TFM Lule University of Technology Materials Physics and Engineering at TFM/LTU Ceramics Carbon Nanomaterials
Materials Physics group Division of Physics,TFM Luleå University of Technology
Alexander Soldatov
Materials Physics group Division of Physics,TFM Luleå University of Technology
Ceramics (MAX phases)
Materials synthesis lab
Materials properties: Theoretical Modeling Biomaterials
SPM lab
Carbon Nanomaterials Tribomaterials
High-pressure Spectroscopy lab
High-performance Steel Simulations
Materials Physics group Division of Physics,TFM Luleå University of Technology
High-pressure spectroscopy lab
led by A.V. Soldatov
Scanning probe microscopy lab
led by N. Almqvist
State of the art equipment Advanced materials characterization, methods development Research on nanostructured, bio-materials, tribo-systems
Materials Physics group Division of Physics,TFM Luleå University of Technology
Static pressure up to 2-4Mbar Temperature up till 600 C
diamo nds laser sa mp le ruy gasket
Diamond culet: ~ 100-500 micron Sample chamber: ~ 50 - 200 micron
Materials Physics group Division of Physics,TFM Luleå University of Technology
Dual excitation (532 nm and 633 nm lasers) Spectroscopic imaging Mapping of stress in materials Spectroscopy of single molecules, clusters, inclusions
Imaging of Ruby crystals in a DAC spectral
Materials Physics group Division of Physics,TFM Luleå University of Technology
Equipment
Ntegra Prima/Aura Solver Pro-M
Environmental/ Dry vacuum Hermetic cell: Air-gas -30C to 170C Liquid -10C to 120C Scanning tip/scanning sample Scanners:
1x1x1 micrometer scanner(CLE) 10x10x3 my (CLE) 100x100x12 my– Closed loop. 100x100x10 my tip scanning head vacuum compatible (may be used as stand alone) 100x100x10 my tip scanning head - CL
Nanoscan hardness/indentation Electrochemical AFM SAM – Custom experiments
Materials Physics group Division of Physics,TFM Luleå University of Technology
SPM modes and measurements:
STM constant height and constant current STM I(V) and I(Z), dI/dV contact AFM LFM Semicontact Measure up to 9th harmonics Phase Imaging Force Modulation (viscoelastisity) MFM Electrostatic FM Electrodynamic FM Adhesion Force Imaging Spreading Resistance Imaging (SRI) Scanning Capacitance Imaging (SCI) Scanning Kelvin probe microscopy(SKM) Torsional resonance mode Nanolithography and Nanomanipulation Force Distance curves Piezoresponce Force Microscopy Nanolithography and Nanomanipulation Force Distance curves Nanoindentation and hardness measurements of superhard materials elastic modulus measurements of superhard materials and thin measurements are made in the air with no special sample preparation Force-volume AFM, F-D spectroscopy
Materials Physics group Division of Physics,TFM Luleå University of Technology
Fullerenes (fullerene polymers, phase transitions at high p, T) Carbon nanotubes (spectroscopy of individual, functionalized SWCNTs, DWNT) Composite materials based on CNTs Molecular electronic devices based of carbon nanostructures Tribological (tribo-) chemistry Single-molecule spectroscopy, methods development
Materials Physics group Division of Physics,TFM Luleå University of Technology
Fullerene polymers high pressure 13 GPa (130 000 atm) high T (900 C)
Material is HARDER than diamond! Carbon nanostructures for MOLECULAR electronics!
Materials Physics group Division of Physics,TFM Luleå University of Technology
Tensile strength 15-100 GPa (steel 2 GPa) Young’s modulus 1-1.5 TPa Can be bent and buckled without breaking ! Density 1.4 gcm-3 Estimated current carrying capacity 109 A/cm2 Temperature stability 3000 K Thermal conductivity 6000 W/mK Excellent field emitter
(And the electronic and quantum properties are also extremely interesting!)
Materials Physics group Division of Physics,TFM Luleå University of Technology
Individual single- wall carbon nanotube
0,8192nm Direct evidence for individual carbon nanotubes
Materials Physics group Division of Physics,TFM Luleå University of Technology
Motivation
Problems
A consequence: to date the attempts to synthesize a high-performance CNT-based composite failed… Possible solutions?
to the matrix (polymer) molecules
CNTs Matrix
500 nm
Materials Physics group Division of Physics,TFM Luleå University of Technology
study of the distribution of nanotubes in the matrix via mapping out the intensity of the CNT G-band using Raman spectral imaging
Sample surface Raman spectrum Is taken at every scanning point Raman map laser
Materials Physics group Division of Physics,TFM Luleå University of Technology
Characterization of carbon nanotube composites w ith SPM methods Plain imaging
Surface modification
Details about the CNT composites project will be presented by Ilya Dobryden (session 2)
Materials Physics group Division of Physics,TFM Luleå University of Technology
Micro- nanomechanical properties:
Cantilever based forcemapping techniques Nanoindentation, nanoscratching and elasticity Electrical properties including picoampere measurements and probing of buried nanotubes
Characterization of carbon nanotube composites w ith SPM methods
Materials Physics group Division of Physics,TFM Luleå University of Technology
Materials Physics group Division of Physics,TFM Luleå University of Technology
Surface interactions, surface characterization, thin films, surface moldifications, self-assembly, high quality steel – steel inclusions, biomimetics
Polymerized Carbon-60 AFM image showing fully grown hexagonal BaFe12 O19 crystallites. “Blistering” on graphite
Materials Physics group Division of Physics,TFM Luleå University of Technology
Three-dimensional surface plot of chains of aluminium oxide clusters, which “binds” to the ferrite matrix. [Strandh, Solhed,
Almqvist, LTU]
Large scale AFM image of pearlite structure and multiple layered grain boudaries. [Strandh,
Solhed, Almqvist, LTU]
Steel AFM image of small aluminium
Almqvist, LTU]
Nils Almqvist, Division of Physics
Materials Physics group Division of Physics,TFM Luleå University of Technology
Maskin element (Tribo-chemistry) Inorganic Chemistry Mathematics
Materials Physics group Division of Physics,TFM Luleå University of Technology
HARVARD Forschungszentrum Karlsruhe Lawrence Livermore National Lab.
Materials Physics group Division of Physics,TFM Luleå University of Technology
COLLABORATORS:
thermal properties of fullerene polymers
France CNT composite materials, functionalization of carbon nanotubes, gas adsorption
Dept of Physics, Dept. of Chem., Umeå University, Sweden
Fullerene polymers synthesis at moderate pressures, NMR
transport measurements on single fullerene molecules
Institute for Advanced Materials Research (AIST), Tsukuba,
Japan photolithography-assisted CVD synthesis of aligned carbon nanotube arrays
Materials Physics group Division of Physics,TFM Luleå University of Technology
Materials Physics group Division of Physics,TFM Luleå University of Technology
Group Members (standing, left to right): Mattias Mases, Benjamin Bax, Andreas Mueller, Guillaume Chevennement, Shuai Wei, (Sitting): Joel Andersson, Alex Soldatov, Brigitte Vigolo (visiting scientist), Cedric Chauvet.. Ilya Dobryden (not featured on the photo)
Materials Physics group Division of Physics,TFM Luleå University of Technology